Max Dunnenberger

Title: Max Dunnenberger: Innovator in Color Formers and Quaternary Ammonium Compounds

Introduction

Max Dunnenberger is a notable inventor based in Frenkendorf, Switzerland. He has made significant contributions to the field of chemistry, particularly in the development of color formers and quaternary ammonium compounds. With a total of 5 patents to his name, Dunnenberger's work has had a lasting impact on various industries.

Latest Patents

Dunnenberger's latest patents include a process for the manufacture of color formers of indoles and anhydrides. This innovative process involves the reaction of 2 moles of an indole in the presence of a condensation agent with about 1 mole of an anhydride. The resulting color formers are used in pressure-sensitive recording paper, showcasing their practical applications. Another significant patent involves quaternary ammonium-hydroxyaryl compounds, which are useful for controlling harmful microorganisms. These compounds are characterized by their unique molecular structures, which include high molecular weight aliphatic residues and aromatic components.

Career Highlights

Throughout his career, Dunnenberger has worked with prominent companies such as Ciba-Geigy AG and Ciba-Geigy Corporation. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking research and development in his field.

Collaborations

Dunnenberger has collaborated with notable coworkers, including Robert Garner and Max Schellenbaum. These partnerships have fostered a creative environment that has led to innovative solutions and advancements in their respective areas of expertise.

Conclusion

Max Dunnenberger's contributions to the field of chemistry through his patents and collaborations highlight his role as a significant inventor. His work continues to influence various applications in industry and research.